FSG - Cell level formulas

I have an FSG report with 18 columns with both a row calculations and a col
umn calculations. The column calculation takes precedence over the row calc
ulation but on one row/column combination, I need the row calculation. If I
set the row calc to override the column calc, then the some of the other 1
7 columns of the report are incorrect. Is there a way to specify a calc on
single column/row combination? We publish most of our reports through ADI.
I tried to put a formula in the ADI template but it did not work. Is there
a way to apply a cell-level formula in the ADI template to do the calc that
I need.
Thanks in Advance,